I wonder if referencing the NAS by IP address in fstab would be a 'fix' .....
So I tried the IP address and it still won't mount during boot. I'm really baffled why it works for some and others need the work around.
Hardware/driver (esp. WRT to network cards) differences from user to user...speed with which the system gets an address via DHCP vs. static IP (even when statically allocated via DHCP)...speed/efficiency various systems can process startup task (in parallel, etc)...

I'm sure there are many factors, and I'm not sure which to suggest you focus on, considering you have a functional setup, now.
